Traduciendo paso 9
Use a soft brush (like a toothbrush or detailing brush) to gently scrub away any corrosion and liquid residue on the logic board and other components.
Keep the logic board and any other alcohol-covered components over a cloth. There's a chance the alcohol can damage or mark your work surface.
If needed, repeat steps 8 and 9 until all corrosion and residue is gone.